Method for decoupling interference due to bleedover in...

Details Method for decoupling interference due to bleedover in... Method for decoupling interference due to bleedover in...

2006-06-06

2006-06-06

Tokar, Michael (Department: 2862)

Electricity: measuring and testing

Conductor identification or location

Inaccessible

C324S326000

Reexamination Certificate

active

07057383

ABSTRACT:
When cables run side by side over a longer distance, an alternating-current signal used for cable location can couple or ‘bleedover’ to neighboring cables. The coupled current flowing in the neighboring cable creates field distortion and makes position determination of the targeted cable difficult. The resulting magnetic field of both (or more) cables has a non-circular shape and is commonly known as a distorted field. Established methods for finding the position of the cable under investigation lead to inaccuracies or even wrong locates. The method described herein eliminates the field distortion that is due to the coupled cables by demodulating a phase reference signal placed on the cable by a transmitter into two signal strength constituents. The inphase signal represents the field strength of the targeted conductor and is substantially free of field distortion. The other quadrature signal contains the component of the field associated with distortion.

REFERENCES:
patent: 5194812 (1993-03-01), Yokoi
patent: 5260659 (1993-11-01), Flowerdew et al.
patent: 5798644 (1998-08-01), Eslambolchi et al.
patent: 6127827 (2000-10-01), Lewis
patent: 6215888 (2001-04-01), Eslambolchi et al.
patent: 6407550 (2002-06-01), Parakulam et al.
patent: 6411073 (2002-06-01), Fischer et al.
patent: 6549011 (2003-04-01), Flatt
patent: 6756783 (2004-06-01), Brune et al.
patent: 2003/0058961 (2003-03-01), Fling et al.
patent: 1 217 391 (2002-06-01), None

Affiliated with

Also associated with

Rating

Method for decoupling interference due to bleedover in... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for decoupling interference due to bleedover in..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for decoupling interference due to bleedover in... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3635353